@molaka
Personally, I advise folks AGAINST buying used laptops -- unless you get a refurbished unit from a reputable supplier -- basically because you never really know what was done to it by the previous owner -- you have to take their word for it.
This model, as far as I can tell, has a removable battery -- so it's unlikely to be a problem of someone cracking the internal battery so it does not function anymore.
You can check the battery to some extent using Powershell built into Windows 10, as follows:
1) Press Windows key + X
2) Click Powershell in the menu
3) Type powercfg /batteryreport
This will generate a report and if you scroll down, you will see Design Capacity and Full Charge Capacity ratings. If the Full Charge Capacity is less than 50% of the Design Capacity, it is faulty and needs to be replaced.
Also note the figure alongside the "Cycle Count". This tells how many times the battery has been fully recharged. A typical battery can handle around 500 charge cycles, but some will fail sooner than that.
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